http://uk.reuters.com/article/us-britain-eu-negotiations-idUKKBN17R1XJ
http://www.euronews.com/2017/07/21/austria-warns-italy-over-influx-of-migrants?utm_source=newsletter&utm_medium=en&utm_content=austria-warns-italy-over-influx-of-migrants&_ope=eyJndWlkIjoiZjU3Y2JhYmUwMGUxZDFiNTUxOTU1ZDljNzExNTI1MmEifQ==
https://ukandeu.ac.uk/what-have-we-learned-about-migration-from-the-census/?mc_cid=50b7d10115&mc_eid=815b1928ec
https://www.eurofound.europa.eu/sites/default/files/ef_publication/field_ef_document/ef1714en.pdf